Saliva ejector



Feb. 27, 19,23. 1,447,020

J. GRNBERG SALIVA EJEGTOR Filed Oct. 12, 1921 Q72? venfor Patented Feb. 2.7 19,23.

I "emi JSEF GNBERGror" Benam-"Galatians,

sativaV nanc'iioaf .f 9.,' 1' WIM., 1 ggf," a: 5* .2; Application led October'12, 1932-1. Serial No...5(V)J7,359.`v

To all inkom Hadj/1 concern.;

Be it known that I, JOSEF GRNBERG, a citizen of the German Republic, residing at Berlin, Germany, have invented new and useful Improvements in SalivaV Ejectors, of which the following is a specification.

lMy present invention relates to saliva ejectors for use in dental and the like operations, and has for its object to provide certain improvements whereby the ejector may be readily and effectively maintained in a sanitary condition. A further advantage of these improvements is the possibility to adjust the saliva ejector and its action to the various requirements as determined by the character of the operative or the like treatment, the region of said treatment, the mouth cavity of the 1 patient, and the degree of the secretion of the saliva.. According to my present invention I am making the curved portion of the suction tube of a metal which ordinarily is sufficiently inliexible to enable said curved portion to maintain its suspended position within the lower cavity of the mouth, and which at the same time is pliable to such a degree to enable the operator to alter the curvature in conformity to both the vario-us sizes of mouth cavities and the region out of which the saliva is to `be removed. Moreover, the said pliability enables the operator to readily and eilectively clean the interior of the curved portion of the suction tube by previously straightening said curved portion and restoring the curvature after the cleaning operation. My present invention includes also a novel structure `of the nozzle into which the curved portion of the suction tube terminates and whereby said nozzle may be adjusted with regard to its drawing effect upon the saliva, while the nozzle may be entirely detached from said curved tube when the latter as well as the nozzle is to be cleaned.

I will now describe my invention with reference to the drawing in which I have shown an embodiment of the invention by way of example, the drawing forming a. part of my present application.

Since the principle and working of saliva ejectors are well known in the art to which my present invention appertains, I have onlyshofvvin tl'i'lel'clfi've'dupftion of'ttliei'isifctioii L tube and the improved nozzle into which said lcurved portion terminates.

Fig. l shows the curved tube in elevationk y with a section through the nozzle. Fig. 2 shows the detachable and adjustable part of the nozzle in elevation on an enlarged scale. Fig. 3 is a section along the line 3D3 in, Fig. 2.

I make the curved portion a of thejsuction tube a of a metal, like tin, which is ordinarily/inflexible but pliable when force is applied in bending or straightening the same. Thus, the curvature may be altered to suit various requirements and may be removed` when the tube is to be cleaned by means of lanel'ective cleaning appliance such asa brush or the like.

The curved portion a of the suction tube a terminates in a lixedly secured socket b which is internally provided with a screw thread to v receive the externally screw threaded nozzle. This 'nozzle consists of a foot portion c which is preferably curved spherically on its exterior surface while a tube-like' structure c" projects from its inner surface. This tubelike structure c is provided with longitudinally extending slits d and carries on its cylindrical surface a screw vthread fitting theaforementioned screw thread within the socket b'.

These slits d may be arrangedin diametrical opposition which arrangement simplifies the cleaning operation since with such an arrangement a mechanical cleaning appliance may be passed crosswise through each pair of opposed slits d.

The spherically curved foot portion of the nozzle is of such a thickness that a drawing olf of the saliva film or skin is prevented while only the saliva excess is subjected to the drawing effect of theslits d' through i which the suction of the tube a, a acts upon 95 any liuid within the vicinityof the nozzle. The effective sectional area of said slits d can be adjusted by screwing 'said nozzle c more or less into the socket b.

When the saliva ejector and its parts are to be cleaned, the nozzle c is entirely detached from the suction tube a, a and subjected to a cleaning treatment. For the same purpose the tube portion a is then cov eoy

straightened whereupon a brush can be passed through Vthe tube interior. After the cleaning treatment the nozzle is restored and the tube a" rebent to its curved form.

What I claim as my invention and desire to secure by Letters Patent of the `United States, is

l. In a saliva ejector, a curved tube of a metal that is ordinarily inflexible, and pliable when subjected to a plying force, and

a nozzle-like curved tube termination, com-y prising, in combination, a detachable hollow plug, a thickened end portion, longitudinally eXtendingdrawing-o" slits in` said metal that is ordinarily` inflexible and pliable when subjected to a plying force, an -i internal screw thread at vthe end of' said curved tube, a plug adapted'to be screwed into said screw threaded tube end and comprising a solid head, a-hollow stern, and longitudinally extending slitsin said hollow stem, said slits being disposed in diametrical opposition. f f

JOSEF GRNBERQ 

